The range through these states is mediated by the arousal system, a network of tracts converging from sensory systems to integrating centers in the brain stem.

这些状态的变化是以激发系统作为媒介完成的，而所谓激发系统，是指从各个感觉系统汇聚到位于脑干中整合中心的一个网络。

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Changes in the electrical pattern of the brain indicate that the stimulus is getting through to the infant's central nervous system and eliciting some form of response.

脑电模式的变化表明，刺激正通过婴儿的中枢神经系统，并引发某种反应形式。

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The main hoist winch and a system of elevators lift 1,250 tons of pipes and machinery through the 72 inches wide hole at the bottom of the boat.

主起吊绞车和升降机系统可通过船底72英尺宽的洞，提升1，250吨重的管道和机械。

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Jim Zimbelman shared his studies of solar system geology with the public through images.

VOA: special.2010.07.28

system is the opposite of the open system, no mass and no energy can flow through the boundary.

孤立系与开系正相反，没有质量或能量,能流过它的边界。

麻省理工公开课 - 热力学与动力学课程节选

"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

President Hugo Chavez created the prisons ministry last year to push through reforms of the system after a major uprising at El Rodeo jail outside Caracas.

BBC: Venezuela pledges action after 25 die in prison riot

The Dynamic Music function likewise featured in the new MINI Connected App contains a selection of exclusively composed music which can be played back through the audio system of the MINI.

ENGADGET: Mini Cooper Connected app adjusts music based on driving style, stops when airbags deploy

And those Americans who are already covered will no longer have to live in fear that their family might fall through the cracks of the system we have now.

WHITEHOUSE: President Obama Meets with Senate Leaders